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improve examples (#708)

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This commit is contained in:
Alessandro Ros
2025-02-22 14:28:02 +01:00
committed by GitHub
parent 3829fef787
commit 90cac184c9
58 changed files with 1593 additions and 929 deletions
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49
examples/client-record-format-vp8/main.go
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@@ -4,8 +4,6 @@ package main
import (
"crypto/rand"
"image"
"image/color"
"log"
"time"
@@ -22,7 +20,7 @@ import (
// 5. write RTP packets to the server
// This example requires the FFmpeg libraries, that can be installed with this command:
// apt install -y libavformat-dev libswscale-dev gcc pkg-config
// apt install -y libavcodec-dev libswscale-dev gcc pkg-config
func multiplyAndDivide(v, m, d int64) int64 {
secs := v / d
@@ -39,28 +37,6 @@ func randUint32() (uint32, error) {
return uint32(b[0])<<24 | uint32(b[1])<<16 | uint32(b[2])<<8 | uint32(b[3]), nil
}
func createDummyImage(i int) *image.RGBA {
img := image.NewRGBA(image.Rect(0, 0, 640, 480))
var cl color.RGBA
switch i {
case 0:
cl = color.RGBA{255, 0, 0, 0}
case 1:
cl = color.RGBA{0, 255, 0, 0}
case 2:
cl = color.RGBA{0, 0, 255, 0}
}
for y := 0; y < img.Rect.Dy(); y++ {
for x := 0; x < img.Rect.Dx(); x++ {
img.SetRGBA(x, y, cl)
}
}
return img
}
func main() {
// create a stream description that contains a VP8 format
forma := &format.VP8{
@@ -110,38 +86,35 @@ func main() {
ticker := time.NewTicker(200 * time.Millisecond)
defer ticker.Stop()
i := 0
for range ticker.C {
// create a dummy image
img := createDummyImage(i)
i = (i + 1) % 3
// get current timestamp
pts := multiplyAndDivide(int64(time.Since(start)), int64(forma.ClockRate()), int64(time.Second))
// create a dummy image
img := createDummyImage()
// encode the image with VP8
au, pts, err := vp8enc.encode(img, pts)
frame, pts, err := vp8enc.encode(img, pts)
if err != nil {
panic(err)
}
// wait for a VP8 access unit
if au == nil {
// wait for a VP8 frame
if frame == nil {
continue
}
// generate RTP packets from the VP8 access unit
pkts, err := rtpEnc.Encode(au)
// generate RTP packets from the VP8 frame
pkts, err := rtpEnc.Encode(frame)
if err != nil {
panic(err)
}
log.Printf("writing RTP packets with PTS=%d, au=%d, pkts=%d", pts, len(au), len(pkts))
log.Printf("writing RTP packets with PTS=%d, frame size=%d, pkt count=%d", pts, len(frame), len(pkts))
// write RTP packets to the server
for _, pkt := range pkts {
pkt.Timestamp = uint32(int64(randomStart) + pts)
pkt.Timestamp += uint32(int64(randomStart) + pts)
err = c.WritePacketRTP(desc.Medias[0], pkt)
if err != nil {